71312140

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{40063}}^1$

素因数の和:40161

約数の個数: 24

約数和(自身を含む): 151441920

約数和(自身を除く): 80129780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 40063, 80126, 160252, 200315, 400630, 801260, 3565607, 7131214, 14262428, 17828035, 35656070, 71312140]

約数ペア:

[(1, 71312140), (2, 35656070), (4, 17828035), (5, 14262428), (10, 7131214), (20, 3565607), (89, 801260), (178, 400630), (356, 200315), (445, 160252), (890, 80126), (1780, 40063)]